Machinery Lubrication

Machinery Lubrication Nov-Dec 2019

Machinery Lubrication magazine published by Noria Corporation

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42 | November - December 2019 | www . TEST YOUR KNOWLEDGE This month, Machiner y Lubrication continues it s " Test Your Knowledge" sec tion in which we focus on a group of questions from Noria's Prac tice Exam for Level I Machine Lubrication Technician and Machine Lubricant Analyst. The answers are located at the bottom of this page. The complete 126-question prac tice test with expanded answers is available at ANSWERS 1. D Other names for adhesive wear include galling, scuffing, seizing and severe sliding. Adhesive wear normally occurs during machine starts, loss of film strength and overload/overspeed conditions. Proper lubricant selection is essential to control this wear mode. 2. A This is to assess the actual condition of the oil before it gets filtered. 3. B Compatibility of different greases is a serious issue that mainly depends on the thick- ener type. In general, most grease thickeners are incompatible, so extreme caution is required when switching from one grease type to another. 1. Adhesive wear can be described as: A) e adhesion of wear debris to a layer of varnish B) e adhesion of a layer of oil to the metal surface C) e transfer of silicon particles from one metal surface to another D) e transfer of metal from one surface to another through a localized welding process E) None of the above 2. Oil samples from an off-line (kidney-loop) filtration circuit should be taken: A) Downstream of the pump, upstream of the filter B) Downstream of the reservoir, upstream of the pump (before the pump) C) Downstream of the filter D) From the sump E) From the drain plug 3. Compatibility of different greases: A) Is only a minor issue and often can be ignored B) Is a major issue that is dependent on the thickener used C) Is independent of the thickeners used D) Can be linked to the age of the grease involved E) Is dependent only on the base oil used Stay Connected With Noria Social icon Rounded square Only use blue and/or white. For more details check out our Brand Guidelines. Follow us on Twitter Like us on Facebook Connect with us on LinkedIn /noria-corporation Continue learning with us on YouTube

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